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Roland AC-33

AC / DC 30-Watt Compact Acoustic Chorus Guitar Amplifier

Product Code 45337

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Rich, deep, stereo sound to go — introducing the AC-33, the world's first battery-powered amp made specifically for acoustic guitar. Portable yet powerful, the AC-33 provides true stereo sound, Guitar and Mic/Line channels, custom-tailored effects, anti-feedback, and a Phrase Looper. But this amp was made to go places no amp has gone before. Thanks to its battery-power capability, the AC-33 lets you take your act anywhere: into the backwoods, onto the streets, or wherever your imagination leads you.

Equipped with Roland's latest DSP technology, the AC-33, delivers pure, rich acoustic sound with projection far beyond its size. Its true stereo design (15 watts x 2) enables brilliant stereo/multi-band chorus with "Wide" mode, plus shimmering reverb and 3D-type ambiance effects tailored specifically for acoustic guitar.

The AC-33 provides two discrete channels: Guitar and Mic/Line. Plug in an acoustic guitar and a microphone (or line-level instrument) and mix them separately. Both channels have dedicated controls for volume, multi-band EQ, and chorus. The Mic/line channel offers both XLR and 1/4" inputs. You can also connect an MP3/CD player to the stereo AUX input for play-along practice or performance. Master volume, reverb, ambiance, and anti-feedback are provided as well.

The AC-33's onboard Phrase Looper lets you record, loop, and jam over your own guitar riffs or incoming audio from the AUX input. Record and loop up to 40 seconds at a time, and amaze your listeners with sound-on-sound performances that you create on the spot.

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UPC: 761294411353

  • 30 watts (15W+15W) of natural, stereo acoustic sound through twin speakers
  • Runs on AC power or eight AA batteries (accepts rechargeable NiMH types)
  • Dual-channel configuration: Guitar and Mic/Line channel
  • Reverb, chorus, and ambience effects (Ambience adds spatial, 3D-type depth to the sound)
  • Phrase Looper with 40 seconds of record time
  • Stereo AUX input (connect MP3/CD players, etc), headphone output
  • Anti-feedback function
  • Built-in tilt-back stand
  • Removable battery cartridge for easy battery replacement

    Rated Power Output
  • 15 W+15 W (when using the AC adoptor)
  • 10 W+10 W (when using the Alkaline batteries)

    Nominal Input Level (1 kHz)
  • GUITAR Channel: -10 dBu
  • MIC/LINE Channel: -50 dBu/-20 dBu
  • AUX IN: -10 dBu

    Nominal Output Level (1 kHz)
  • LINE OUT: -10 dBu

  • 12 cm (5 inches) x 2

  • GUITAR Channel: VOLUME Knob, Equalizer Knobs (BASS, MIDDLE, TREBLE), CHORUS Switch
  • MIC/LINE Channel: VOLUME Knob, Equalizer Knobs (BASS, TREBLE), CHORUS Switch
  • AUX IN Controls: LEVEL knob
  • MASTER knob
  • POWER Switch


  • AUX IN Jacks (RCA phono type, Stereo miniature phone type)
  • LINE OUT (L/MONO, R) Jacks (1/4" phone type)
  • PHONES Jack (Stereo 1/4" phone type)
  • FOOT SWITCH Jacks (1/4" TRS phone type)
  • DC IN Jack

    Power Supply
  • AC Adaptor (included, DC 13 V),
  • Dry battery LR6 (AA) type (alkaline) x 8, or
  • Rechargeable battery HR6 (AA) type (nickel metal hydride) x 8

    Current Draw
  • 490 mA

    Expected battery life under continuous use
  • Alkaline: about 8 hours
  • Nickel-metal hydride: about 9 hours
  • These figures will vary depending on the actual conditions of use.

  • Owner's Manual
  • AC Adaptor
  • AC Cord

  • Foot Switch: BOSS FS-5U, FS-6
  • Connection Cable: Roland PCS-31L

    Size and Weight (excluding batteries)
  • Width: 318 mm, 12-9/16 inches
  • Depth: 223 mm, 8-13/16 inches
  • Height: 243 mm, 9-5/8 inches
  • Weight: 4.7 kg, 10 lbs. 6 oz.

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